Legal claims defining the scope of protection. Each claim is shown in both the original legal language and a plain English translation.
1. A banknote processing apparatus that performs an unfit note determination to determine degree of soiling of a banknote being transported, and sorts the banknote in accordance with a determination result, the banknote processing apparatus comprising: a banknote receiving unit that receives the banknote; a transport unit that transports the banknote received by the banknote receiving unit to one of plural output destination units in accordance with a result of the unfit note determination; an image acquiring unit that irradiates the banknote being transported by the transport unit with light of a predetermined wavelength, and acquires an image of the banknote; and an unfit note determining unit that performs the unfit note determination based on the image acquired by the image acquiring unit wherein an image type, a determination area and a coefficient to be used for the unfit note determination are previously set for each banknote orientation of each banknote type, and the unfit note determining unit identifies, based on the banknote type and the banknote orientation of the banknote, the image type to be used for the unfit note determination, the determination are to be used for the image type, and the coefficient for the determination area, calculates an intermediate determination value from the image of an identified image type by applying an identified coefficient to a value calculated from pixel values of pixels in an identified determination area, and determines the degree of soiling of the banknote by using the intermediate determination value.
A banknote processing apparatus determines the degree of soiling of a banknote and sorts it accordingly. The apparatus includes a receiver for banknotes, a transport mechanism that moves banknotes to different output locations based on the soiling determination, and an image acquisition unit that captures images of the banknote using specific wavelengths of light. The apparatus determines soiling by first identifying the banknote type and orientation. Based on this identification, a specific image type, a determination area within the image, and a coefficient are selected. An intermediate determination value is calculated from the pixel values within the identified determination area, modified by the selected coefficient. Finally, the degree of soiling is determined using this intermediate value.
2. The banknote processing apparatus according to claim 1 , wherein the image acquiring unit irradiates the banknote with a green light, a red light, and at least one of a violet light and a blue light, and acquires the image of each wavelength.
The banknote processing apparatus, as described where it determines the degree of soiling of a banknote and sorts it accordingly; it includes a receiver, a transport mechanism, and an image acquisition unit; it determines soiling by first identifying the banknote type and orientation, selects a specific image type, a determination area, and a coefficient; it calculates an intermediate determination value from pixel values modified by the coefficient; and the degree of soiling is determined using this intermediate value, acquires images using green light, red light, and either violet or blue light. The image acquisition unit irradiates the banknote with each of these colors to capture multiple images at different wavelengths.
3. The banknote processing apparatus according to claim 1 , wherein the unfit note determining unit calculates a ratio of the pixel values of pixels in the determination area of the image acquired by irradiating the banknote with a visible light to pixel values in the same determination area of the image acquired by irradiating the banknote with an infrared light, and obtains the intermediate determination value by applying the coefficient to the ratio.
The banknote processing apparatus, as described where it determines the degree of soiling of a banknote and sorts it accordingly; it includes a receiver, a transport mechanism, and an image acquisition unit; it determines soiling by first identifying the banknote type and orientation, selects a specific image type, a determination area, and a coefficient; it calculates an intermediate determination value from pixel values modified by the coefficient; and the degree of soiling is determined using this intermediate value, calculates a ratio between pixel values from images captured with visible light and infrared light within the same determination area. The intermediate determination value is then obtained by applying the pre-selected coefficient to this ratio. This ratio helps distinguish soiling from genuine banknote features.
4. The banknote processing apparatus according to claim 1 , further comprising: a storage unit that stores therein, for each of banknote types and banknote orientations, evaluation value calculation parameters including at least one image type, at least one determination area in the image of each image type and at least one coefficient corresponding to each determination area.
The banknote processing apparatus, as described where it determines the degree of soiling of a banknote and sorts it accordingly; it includes a receiver, a transport mechanism, and an image acquisition unit; it determines soiling by first identifying the banknote type and orientation, selects a specific image type, a determination area, and a coefficient; it calculates an intermediate determination value from pixel values modified by the coefficient; and the degree of soiling is determined using this intermediate value, also includes a storage unit. This storage unit holds evaluation value calculation parameters, including at least one image type, at least one specific determination area within each image type, and at least one coefficient associated with each determination area, all organized by banknote type and orientation. This allows for customized evaluation based on the specific characteristics of each banknote.
5. The banknote processing apparatus according to claim 4 , wherein the storage unit further stores at least one threshold value therein for each of the banknote types and the banknote orientations, and the unfit note determining unit determines the degree of soiling of the banknote by calculating a final evaluation value from the intermediate determination value and comparing the final evaluation value to the threshold value stored in the storage unit.
The banknote processing apparatus, as described where it determines the degree of soiling of a banknote and sorts it accordingly; it includes a receiver, a transport mechanism, an image acquisition unit, and a storage unit that holds evaluation value calculation parameters; it determines soiling by first identifying the banknote type and orientation, selects a specific image type, a determination area, and a coefficient; it calculates an intermediate determination value from pixel values modified by the coefficient; and the degree of soiling is determined using this intermediate value, further stores at least one threshold value for each banknote type and orientation. The degree of soiling is determined by calculating a final evaluation value from the intermediate determination value and then comparing this final value against the stored threshold value.
6. The banknote processing apparatus according to claim 4 , wherein the evaluation value calculation parameters include, for each of the image types to be used in the unfit note determination, intermediate evaluation value calculation parameters for calculating the intermediate evaluation value, and an average and a variance-covariance matrix of the respective intermediate evaluation values, and the unfit note determining unit, based on the intermediate evaluation value calculation parameters, calculates the intermediate evaluation values for each of the images acquired by irradiating light of a plurality of wavelengths, calculates a Mahalanobis distance of the intermediate evaluation values from the intermediate evaluation values, the average to the variance-covariance matrix, and performs the unfit note determination based on the Mahalanobis distance.
The banknote processing apparatus, as described where it determines the degree of soiling of a banknote and sorts it accordingly; it includes a receiver, a transport mechanism, an image acquisition unit, and a storage unit that holds evaluation value calculation parameters; it determines soiling by first identifying the banknote type and orientation, selects a specific image type, a determination area, and a coefficient; it calculates an intermediate determination value from pixel values modified by the coefficient; and the degree of soiling is determined using this intermediate value, uses intermediate evaluation value calculation parameters, an average, and a variance-covariance matrix for each image type used in the soiling determination. It calculates intermediate evaluation values for images captured at multiple wavelengths, and then calculates a Mahalanobis distance based on these values, the average, and the variance-covariance matrix. The soiling determination is then based on this Mahalanobis distance.
7. A banknote processing method for performing an unfit note determination to determine degree of soiling of a banknote being transported, and sorting the banknote in accordance with a determination result by the banknote processing apparatus, the banknote processing method comprising: receiving the banknote; transporting the banknote received at the receiving; acquiring an image of the banknote by irradiating the banknote being transported with light of a predetermined wavelength; identifying an image type to be used for the unfit note determination, a determination area to be used for each of the image types, and a coefficient for the determination area based on a banknote type and a banknote orientation of the banknote, the image type, the determination area and the coefficient having been previously set for each banknote orientation of each banknote type; calculating intermediate determination value from the image of an identified image type by applying an identified coefficient to a value calculated from pixel values of pixels in an identified determination area; performing the unfit note determination based on the intermediate value; and transporting the banknote to any one of plural output destination units in accordance with a result of the unfit note determination.
A banknote processing method determines the degree of soiling of a banknote and sorts it accordingly. The method involves receiving the banknote, transporting it, and acquiring an image using specific wavelengths of light. The method identifies a specific image type, a determination area within that image, and a coefficient, based on the banknote type and orientation. An intermediate determination value is calculated from the pixel values within the identified determination area, modified by the selected coefficient. The degree of soiling is determined using this intermediate value, and the banknote is routed to a specific output location based on the result.
8. The banknote processing method according to claim 7 , further comprising: determining a value of the coefficient according to optical properties of the banknotes that include a color of a substrate, and a material quality of the substrate, a background pattern, and a color tone, for each of the banknote types and the banknote orientations.
The banknote processing method, as described where it determines the degree of soiling of a banknote and sorts it accordingly; it involves receiving the banknote, transporting it, acquiring an image, identifying an image type, a determination area, and a coefficient; it calculates an intermediate determination value, determines the degree of soiling, and routes the banknote based on the result, determines the value of the coefficient based on the banknote's optical properties. These properties include substrate color, substrate material quality, background pattern, and color tone. The coefficient is customized for each banknote type and orientation to account for variations in these properties.
9. The banknote processing method according to claim 8 , wherein a multiplier used for correcting the pixel values of images obtained by irradiating Rail the banknote with visible lights of different wavelengths to the same level between the images is calculated as the value of the coefficient for correcting each of the images, the images are acquired for each of the banknote types, the banknote orientations, and wavelengths, by irradiating the banknote with the visible lights of different wavelengths in the image acquiring.
The banknote processing method, as described where it determines the degree of soiling of a banknote and sorts it accordingly; it involves receiving the banknote, transporting it, acquiring an image, identifying an image type, a determination area, and a coefficient; it calculates an intermediate determination value, determines the degree of soiling, and routes the banknote based on the result, calculates a multiplier to correct pixel values of images obtained with different visible light wavelengths so they are at the same level. This multiplier becomes the correction coefficient for each image. Images are acquired at different wavelengths for each banknote type and orientation.
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October 17, 2017
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